Final answer:
The inequalities that define region R are: (a) r < R₁, (b) R₁ < r < R₂, and (c) r > R₂.
Step-by-step explanation:
To define region R, we need inequalities based on the given information. Let's assume that region R is defined by the condition (a < R₁, R₁ < r < R₂, and r > R₂).
Inequality (a) r < R₁ implies that any value of r less than R₁ is included in region R.
Inequality (b) R₁ < r < R₂ implies that any value of r between R₁ and R₂, but not including R₁ and R₂, is included in region R.
Inequality (c) r > R₂ implies that any value of r greater than R₂ is included in region R.
So, the inequalities that define region R are:
(a) r < R₁
(b) R₁ < r < R₂
(c) r > R₂